Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B22—CASTING; POWDER METALLURGY
  • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
  • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
  • B22D41/14—Closures
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B22—CASTING; POWDER METALLURGY
  • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
  • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
  • B22D41/14—Closures
  • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
  • B22D41/40—Means for pressing the plates together

Definitions

• the invention relates to a sliding closure according to the preamble of claim 1; and an associated slide unit.
• a longitudinally displaceable, fireproof closure plate receiving slide unit which is designed as a slide carriage and therefore has rollers on both sides for its longitudinal guidance.
• the slide carriage In the assembled state, the slide carriage is guided longitudinally with its rollers on guideways of a frame, which in turn is held on an upper part of the housing by means of a plurality of spring elements.
• the upper part of the housing on the other hand, is releasably attached to the spout of the vessel containing the molten metal.
• the slide unit can be detached from the frame and from the upper housing part in particular for a plate change, in that it can be moved into a position lying outside an open and closed position, in which the guideways are lowered by a height that relaxes the spring elements.
• the frame provided with the guideways is solid due to its housing-like design and it is therefore relatively complex and therefore expensive to manufacture.
• the present invention was based on the object of creating a sliding closure according to the type mentioned at the outset, which consists of a simple construction and is therefore less expensive to manufacture.
• this sliding closure according to the invention can be provided with smaller dimensions, in particular in terms of its length and width, with the same stroke and the same plate sizes.
• this can be manufactured more cost-effectively due to the fact that the housing frame can be dispensed with.
• slide lock such as the automatic release and tensioning of the slide unit from or to the housing part
• advantages of the known slide lock are fully utilized with this slide lock according to the invention.
• Another significant advantage of this slide closure according to the invention is that the slide unit, after being detached from the housing part, is pivotably mounted with a simple hinge about an axis of rotation running parallel to the direction of displacement, which is provided on one or the other outside of the housing part. This allows the slide unit to be pivoted in the horizontal and non-vertical direction given the mounting conditions of the pans.
• FIG. 1 shows a slide closure according to the invention in cross-section
• FIG. 2 shows the slide closure according to FIG. 1 in a view from below
• FIG. 3 shows the slide closure according to FIG. 1 in a side view, the slide unit of which is shown in broken lines
• FIG. 4 shows a longitudinal section of the Sliding closure according to Fig.l
• Fig.5 shows an embodiment variant of a sliding closure in cross section.
• Fig.l shows a slide closure 20 on the spout of a container containing molten metal.
• this container which is lined with refractory material, only the outer steel jacket 13 and a refractory perforated brick 17 are indicated.
• This container is, in particular, a pan used in a continuous caster into which molten steel is poured.
• a fireproof sleeve 11 forms the pouring opening 12 of the container, to which an upper refractory closure plate 22 tightly connects, which is fixed in a housing part 14 of the slide closure 20. is increasing.
• a refractory closure plate 23 held in a longitudinally movable slide unit 30 is pressed against the upper plate 22 by means of spring members 26.
• An exchangeable refractory pouring sleeve 16 also connects to the latter.
• This plate 23 is used to open or close the closure 20, for this purpose it is displaceably arranged together with the slide unit 30 holding it by a drive element.
• the slide unit 30 is held in a longitudinally displaceable manner on the housing part 14 by a plurality of holding means 40 running perpendicular to its longitudinal extent, these holding means 40 each being fastened to the housing part 14 and having a guide means opposite each other, each of which slides on a guideway 36 formed on the slide unit 30.
• Two holding means 40 are expediently provided on both sides of the closure plates 22, 23, which are arranged symmetrically to the pouring opening 12 of the container and each have a bolt-shaped connecting member 25 running perpendicular to the longitudinal extent of the housing part 14 or the slide unit 30.
• These connecting members 25 are each adjustable in their axial direction in the housing part 14 and acted on their respective upper head disks 25 'by a spring element 26 designed as a compression spring, the latter being encapsulated in a sleeve 28.
• two sliding rollers 27, which are provided as guide means, are rotatably mounted in pairs, on which the slide unit 30 is guided longitudinally.
• the latter has, on both sides of the closure plate 23 that can be inserted in it, a T-groove-shaped recess 33 running in its direction of displacement, in each of which two guideways 36 are formed.
• the T-groove-shaped recesses 33 which are laterally illustrated as invisible in the slide unit 30, are provided in the middle and at the end with an expanding opening 33 ′, which are dimensioned and designed with respect to one another in such a way that the connecting members 25 together with the sliding rollers 27 can be inserted or removed from them.
• FIG. 3 shows the guideways 36, each of which has a ramp 36 'at the ends at the openings 33' with a height such that the spring members 26 tension when the operating pressure is raised or completely relax when they are released.
• the slide unit 30 is shifted into a position lying outside the open and the closed position of the closure 20, in which the slide unit releases from the spring pressure until its openings 33 ′ are above the slide rollers 27 and then it is released .
• hinge parts 37 arranged laterally on the slide unit 30 pass through their bores in corresponding hinge bolts 38 on the housing part 14, as a result of which the slide unit 30 can be pivoted out. It is coupled here by means of claws 41 or the like to a push rod 42 of a drive element 19 designed as a hydraulic cylinder. As a further advantage, this claw coupling enables the slide unit 30 to be released automatically from the push rod 42.
• the hinge 37, 38 could also be arranged on the other side of the slide unit 30 or on the shorter side facing away from the drive. Accordingly, the slide unit can be swiveled out on one of the three sides depending on the placement of the closure on the pan spout. Since in many applications the direction of displacement of the slide unit at the assembly site runs in the vertical direction, the slide unit can be pivoted horizontally in the arrangement shown, which is associated with little effort.
• the two holding means 40 are stiffened by at least one connecting rod 31, 32 for stabilization against the bending forces that occur, and thereby form a car shape.
• the two connecting rods 31, 32 provided in the present case are located centrally in the recess 33. They have a width which approximately corresponds to that of the connecting members 25, so that the same can be introduced into and out of the recess 33.
• the connecting links 25 are further divided into two and joined together by a tongue and groove connection 25 "or the like. In principle, these connecting rods 31, 32 could also be dispensed with. Instead of the sliding rollers 27, sliding blocks could be used.
• these holding means 40 can be removed laterally from the housing part 14 in packs when the slide unit 30 is pivoted out.
• corresponding recesses 15 are provided in the housing part 14, into which the holding means can be inserted in a suitable manner. From this, the spring members 26 can be quickly removed and reinserted for the often necessary checks of their clamping force.
• transverse and longitudinal ribs 30 ' are assigned to the slide unit 30 in their central part, which serve to reinforce them against bending and torsional forces.
• the sliding closure 20 is otherwise illustrated in the closed position.
• FIG. 5 shows a variant of a sliding closure 50, which is constructed in a manner similar to that according to FIG. 1. Therefore, only the differences are explained in more detail below.
• This sliding closure 50 in turn has a housing part 54 fastened to the container, in which a stationary refractory closure plate 22 is contained.
• the holding means 65 are not fastened in the housing part 54, but rather on the slide unit 60.
• the axially movable connecting members 55 are held in a recess 61 of the slide unit 60 together with the spring members 66 formed from a plurality of plate springs.
• the four connecting members 55 are in turn each assigned a rotatable roller 68 on a horizontal axis 69, which slides on a guide track 71 designed analogously to that according to FIG. 3 on the housing part 54.
• the two guide tracks 71 provided on the side of the housing part extend in the direction of displacement of the slide unit and they are provided with ramps (not shown in more detail) which serve to load and unload the spring members 66.
• both the housing part 14, 54 and the slide unit 30, 60 each have a plate-like design and are arranged parallel and at a short distance from one another in the operating state.
• the dimensions of these sliding closures 20, 50 can thus be kept as small as possible due to the inventive design, be it with Regarding the overall height as well as its length and width. This also results in a cheaper production of the same.
• This closure can be produced both in smaller dimensions for smaller pans with a capacity of up to 100 tons and in larger dimensions for 300 ton pans.
• the spring assembly required for bracing the refractory plates against one another could be provided between the slide plate and the slide unit in a manner known per se. Accordingly, the holding means could not be arranged displaceably in the housing part or in the slide unit.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
• Sliding Valves (AREA)
• Closures For Containers (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=4213607

Family Applications (1)

Country Status (18)

Cited By (4)

Families Citing this family (13)

Family Cites Families (7)

• 1999
  • 1999-07-05 BR BR9912141-7A patent/BR9912141A/pt not_active IP Right Cessation
  • 1999-07-05 EP EP99926222A patent/EP1119428B1/fr not_active Expired - Lifetime
  • 1999-07-05 US US09/744,563 patent/US6422435B1/en not_active Expired - Lifetime
  • 1999-07-05 TR TR2001/00258T patent/TR200100258T2/xx unknown
  • 1999-07-05 CA CA002338351A patent/CA2338351C/fr not_active Expired - Lifetime
  • 1999-07-05 AU AU43569/99A patent/AU756819B2/en not_active Expired
  • 1999-07-05 CN CNB998090670A patent/CN1160168C/zh not_active Expired - Lifetime
  • 1999-07-05 DE DE59910675T patent/DE59910675D1/de not_active Expired - Lifetime
  • 1999-07-05 WO PCT/CH1999/000295 patent/WO2000006325A2/fr active IP Right Grant
  • 1999-07-05 JP JP2000562165A patent/JP4391022B2/ja not_active Expired - Lifetime
  • 1999-07-05 ES ES99926222T patent/ES2232142T3/es not_active Expired - Lifetime
  • 1999-07-05 AT AT99926222T patent/ATE277707T1/de active
  • 1999-07-05 KR KR1020017000807A patent/KR100551476B1/ko not_active IP Right Cessation
  • 1999-07-05 MX MXPA01000931A patent/MXPA01000931A/es unknown
  • 1999-07-05 RU RU2001105196/02A patent/RU2223842C2/ru active
  • 1999-07-14 MY MYPI99002960A patent/MY122456A/en unknown
  • 1999-07-23 TW TW088112533A patent/TW527240B/zh not_active IP Right Cessation
• 2001
  • 2001-01-09 ZA ZA2001/00244A patent/ZA200100244B/en unknown

Non-Patent Citations (1)

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